copper tripeptide-1 inci name ghk-cu Most peptide serums won't tell you the percentage. Ours is on the front of the bottle: 2% GHK-Cu. Swipe for the full formula breakdown — every active, what it's there for CU) supports smoother The GHK-Cu pen works. Volume:10mg – 5 vial lab pack (Save 5%) GLP-1 research peptide
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